The sequel to Iron Man was announced before the studio could even finish counting the over $300 million in domestic box office earnings. Now the challenge is making the new franchise a sustainable one that doesn’t burn out by the third film (think Spider-man or X-Men). Iron Man 2’s producers had to act fast since their leading man is over 40, so the release date was set for May 7, 2010. So, while director Jon Favreau and star Robert Downey Jr. are hard at work on one of the most anticipated sequels in years, we’re hard at work bringing you five things you didn’t know about Iron Man 2.

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